Fujitsu Corporation

Yoshiharu Itou

Kenichi Utsumi

Atsushi Fujita

Masahiro Maeda

Hitomi Akiyama

Kinya Saito

Ichirou Sakuma

Reisuke Nakagawa

Hiroyasu Inagaki

Yuuji Kubo

Sadaharu Fukutoyama

Satoru Kagohashi

In order to facilitate the management of the hardware key of a library apparatus employing the LTO system, a write function of a noncontact memory (CM: cartridge memory) contained in an LTO tape cartridge is implemented in a medium carrying mechanism part of the library apparatus, and during an insertion to a tape drive, the IDs unique to a library control part and to the medium carrying mechanism part are recorded in the non-contact memory and utilized as the hardware key of an encrypting apparatus. The hardware key written once is overwritten (erased) during an ejection, thereby preventing leakage of key information.

Apparatus and method for managing key in library apparatus

A first data selection circuit selects a data signal among a plurality of data signals from a plurality of circuits, a first direction selection circuit selects a direction control signal of the same circuit among a plurality of direction control signals from these circuits. A data holding circuit and a direction holding circuit respectively hold the selected data signal and direction control signal. A second data selection circuit selects a data signal from the first data selection circuit or the data holding circuit. A second direction selection circuit selects the direction control signal from the first direction selection circuit or the direction holding circuit. An output circuit outputs, to a common input/output terminal, the data signal from the second data selection circuit in accordance with the direction control signal from the second direction selection circuit.

Common input/output terminal control circuit

Growing community of inventors

Kawasaki, Japan

Yoshiharu Itou